The New Orleans Saints' offense isn't the only unit rewriting the NFL's record books this year. The Saints already set the league record for most touchbacks on kickoffs in a season with 62 so far. Now tailback/kick returner Darren Sproles and punter Thomas Morstead are also within range of breaking NFL records as they head into Sunday's regular-season finale against the Carolina Panthers.

Sproles has a league-leading 2,528 all-purpose yards this year, based on the combined total of his rushing, receiving, kick return and punt return yards. He needs 163 yards to break the single-season NFL record of 2,690, set by the Tennessee Titans' Derrick Mason in 2000.

Sproles needs 120 all-purpose yards to break the franchise record of 2,647 set by Michael Lewis in 2002. Lewis' total ranks second in NFL history.

Sproles, however, said he's not focused on the NFL record - or even aware of it. When asked how long he's known about his record pace, he said, "since just now when you said it."

"That'd be cool, but it's not on my mind," Sproles said. "That's not my main focus. My main focus is just to help this team win. And that's all that's on my mind when I go out there and play."

Sproles has certainly helped the Saints this year in every way he can. He has 563 rushing yards, 681 receiving yards, 1,035 kickoff return yards, 249 punt return yards and nine total touchdowns. But in his heart, he's still a tailback first and foremost.

Sproles said he always admired all-purpose stars like former New York Giants dynamo Dave Meggett.

Morstead, meanwhile, is well aware of his shot at the NFL's all-time mark for net punting average. For one thing, that's the number that all NFL punters and special teams coverage units care most about because it takes into account the return yardage. And for another thing, the current record-holder Shane Lechler might be the best punter in NFL history.

Lechler set the record with a net average of 43.85 yards for the Oakland Raiders in 2009. Morstead's net average this year is 43.1 yards. And the San Francisco 49ers' Andy Lee has a net average of 43.5.

Morstead already broke one NFL record last week with the kickoff touchbacks - though that tally is inflated a bit because the NFL pushed kickoffs up to the 35-yard line this year, and because the high-scoring Saints kick off so often. The net punting record would be even more special, though.

"That would be really cool," Morstead said. "We have a chance. We've had a couple real good games in a row."